30-km spontaneous-Brillouin distributed temperature sensor employing Simplex-coding and low optical input power

In this work we have applied optical pulse-coding technique to spontaneous Brillouin-based distributed temperature sensor (BDTS) based on the Landau-Placzek ratio (LPR). We experimentally show that pulse-coding applied to optical time domain reflectometry (OTDR) based BDTS allows for a significant performance enhancement, avoiding the use of optical amplification. Actually, by using 127-bit Simplex coding, we achieved about 7 dB signal-to-noise ratio improvement at the receiver, allowing for temperature sensing over 30 km-distance with temperature/spatial resolution up to 5.0 K / 40 m using only 10 mW optical peak power at the fiber input.


Published in:
2008 IEEE Sensors, 282-285
Presented at:
2008 IEEE Sensors, Lecce, Italy, 26-29 October 2008
Year:
2008
Publisher:
IEEE
Laboratories:




 Record created 2012-11-01, last modified 2018-03-17

Publisher's version:
Download fulltext
PDF

Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)